CN217489804U - Solid phase extraction device suitable for large-volume elution and negative pressure suction - Google Patents
Solid phase extraction device suitable for large-volume elution and negative pressure suction Download PDFInfo
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- CN217489804U CN217489804U CN202221249790.3U CN202221249790U CN217489804U CN 217489804 U CN217489804 U CN 217489804U CN 202221249790 U CN202221249790 U CN 202221249790U CN 217489804 U CN217489804 U CN 217489804U
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Abstract
The utility model discloses a but solid phase extraction device suitable for bulky elution and negative pressure suction. The utility model relates to a solid phase extraction device which is suitable for large-volume elution and can suck under negative pressure, comprising a pipe cap with two-way, a pipe main body, a receiving bottle and a base; the upper portion of pipe cap connects the solid phase extraction post, the lower part of pipe cap is connected with the upper portion of pipe main part, the lower part of pipe main part is connected with the receiving flask, one side of pipe main part is connected with the vacuum pump, the receiving flask is arranged in the base. The utility model provides a current commercialization solid phase extraction device, difficult bulky elution of realization and negative pressure suction perfect adaptation, and the operation is complicated, and is with high costs, the poor problem of universality.
Description
Technical Field
The utility model relates to a but solid phase extraction device suitable for bulky elution and negative pressure suction belongs to chemistry experiment device field.
Background
In the process of food and environment detection, solid-phase extraction is a common enrichment and impurity removal means, so that the convenience and universality of a solid-phase extraction device are quite important, and particularly, some solid-phase extraction experiments which need large-volume elution and negative-pressure suction are required. At present, the laboratory solid-phase extraction device has a negative pressure suction function, but can not directly satisfy large-volume elution simultaneously, and various solid-phase extraction devices in the market also have great limitations, or can not satisfy two functions simultaneously, or can satisfy the demand, but complex operation, high cost.
In the prior art, a solid phase extraction device (CN201720563270) suitable for large volume elution is introduced, which is a positive pressure type solid phase extraction device and cannot be sucked under negative pressure. A solid phase extraction column capable of being sucked under negative pressure (CN201520910946) introduces a solid phase extraction column capable of being sucked under negative pressure, which is commercialized and disposable, has high cost, needs to be filled with filler for recycling, has high technical requirement on filling, is complex to operate, and has difficult guarantee of repeatability. A solid phase extraction device capable of negative pressure suction (CN201821993563) introduces a solid phase extraction device capable of negative pressure suction and large-volume elution, but a solid phase extraction column and a receiving bottle of the solid phase extraction device are specially matched, the universality is poor, and due to the action of gravity, the solid phase extraction device capable of negative pressure suction is difficult to realize accurate speed control by a cock and a two-way glass tube.
By last can know, among the prior art, the experimenter when the solid phase extraction, if with general solid phase extraction device, can the negative pressure suction, nevertheless because of the restriction of device inner space, do not put down bulky receiving bottle, need the experimenter to connect with the small test tube and firstly pause and then manually take out the back and pour into the rotary evaporation bottle, complex operation, personnel easily inhale reagent, and superimposed experimental error. Although some solid phase extraction devices capable of eluting with large volume exist in the prior art, the solid phase extraction device is difficult to meet the requirement of negative pressure suction. Some solid phase extraction devices which can be eluted in large volume and sucked in negative pressure are customized in a laboratory with individual conditions, but the solid phase extraction devices are difficult to meet the use in daily experiments due to the complex filling of solid phase extraction columns, poor repeatability, overhigh disposable use cost and the like. In a word, the conventional commercialized solid phase extraction device is difficult to realize the perfect combination of large-volume elution and negative pressure suction, and has the disadvantages of complex operation, high cost and poor universality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but solid phase extraction device suitable for bulky elution and negative pressure suction, this solid phase extraction device have solved current commercialized solid phase extraction device, and difficult bulky elution and negative pressure suction perfect adaptation of realization, and the operation is complicated, and is with high costs, the problem of universality.
The purpose of the utility model can be achieved by adopting the following technical scheme:
a solid phase extraction device suitable for large-volume elution and capable of sucking in negative pressure comprises a tube cap with two passages, a tube main body, a receiving bottle and a base; the upper portion of pipe cap connects the solid phase extraction post, the lower part of pipe cap is connected with the upper portion of pipe main part, the lower part of pipe main part is connected with the receiving flask, one side of pipe main part is connected with the vacuum pump, the receiving flask is arranged in the base.
Further, the pipe cap comprises a solid-phase extraction column connecting port, a two-way pipe, a circular cap body, a pipe cap cavity, a flat circular sealing gasket and a circular sealing ring; the solid-phase extraction column connector, the circular cap body and the tube cap cavity form a tube cap main body of an integrated structure, the two channels are arranged between the solid-phase extraction column connector and the circular cap body, and the flat circular sealing gasket is arranged at the circular cap body.
Furthermore, the solid phase extraction column connector is arranged on the upper part of the pipe cap, and the solid phase extraction column connector is provided with a conical elastic pipe.
Furthermore, a groove is formed in the position where the lower portion of the circular cap body is combined with the upper opening of the pipe main body, and the flat circular sealing gasket is arranged in the groove.
Further, the pipe cap cavity is symmetrically provided with two annular grooves, and the annular grooves are matched and sealed with the circular sealing ring.
Furthermore, the pipe main body comprises an interface upper brim, an upper cavity, a vacuum cavity, a frosted interface, a collecting pipe, a vacuum pumping pipe and a vacuum pumping pipe bulge, wherein the interface upper brim, the upper cavity, the vacuum cavity, the frosted interface, the collecting pipe, the vacuum pumping pipe and the vacuum pumping pipe bulge form an integrated structure;
the vacuum filtration pipe bulge is arranged at the outlet of the vacuum filtration pipe, and the vacuum filtration pipe bulge is matched and sealed with an elastic rubber pipe on the vacuum pump.
Furthermore, the upper end of the collecting pipe is funnel-shaped.
Further, the upper end of the collecting pipe and the inner wall of the pipe main body form an integral structure.
Further, as the utility model discloses one of them scheme, the base includes that shell, several types of calligraphy are protruding and the bottom sprag, several types of calligraphy are protruding to be a plurality of, and several types of calligraphy are protruding to be set up the inner wall at the shell, the top of bottom sprag is arranged in to the shell.
Further, as the utility model discloses an another kind of scheme, the base includes spring, hand type grab frame and bottom sprag, hand type grab frame comprises a plurality of cylinder, the cylinder upper end is provided with the hole, hand type grab frame is placed in bottom sprag's top, the spring passes through the hole and ends.
Compared with the prior art, the utility model following beneficial effect has:
but solid phase extraction device suitable for bulky elution and negative pressure suction has realized the two demands of bulky elution and negative pressure suction in the solid phase extraction process on the one hand, has made things convenient for the processing of daily sample, the possibility of commercialization is higher. The solid phase extraction device is suitable for various commercialized solid phase extraction columns and five common rotary evaporation bottles, has small volume, simple steps and simple and convenient operation, does not need to be transferred, and can directly carry out rotary evaporation. Solid-phase extraction device not only can single sample operation, when needs many samples operation, only need trade a plurality of multi-joint vacuum pump suction tubes and can operate simultaneously at the within range N sample that the pump allows, further realize bulky elution extraction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a solid phase extraction apparatus suitable for large volume elution and negative pressure suction according to embodiment 1 of the present invention.
Fig. 2 is a structural view of a two-way pipe cap according to embodiment 1 of the present invention.
Fig. 3 is a structural view of a tube main body according to embodiment 1 of the present invention.
Fig. 4 is a structural diagram of a base according to one embodiment of the present invention.
Fig. 5 is a structural diagram of a base according to another embodiment of the present invention in embodiment 1.
The device comprises a pipe cap with two passages, a solid-phase extraction column connecting port 11, a pipe cap body 12, two passages, a circular cap body 13, a pipe cap cavity 14, a flat circular sealing gasket 15, a circular sealing ring 16, a conical elastic pipe 17, a pipe body 2, a joint upper brim 21, an upper cavity 22, a vacuum cavity 23, a frosted joint 24, a collecting pipe 25, a vacuum filtration pipe 26, a vacuum filtration bulge 27, a receiving bottle 3, a base 4, a shell 41, a zigzag bulge 42, a flat bottom support 43, a hand-shaped grasping frame 44, a hole 441, and a top spring 45.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are a part of the embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example (b):
as shown in fig. 1 to 4, the present embodiment provides a solid phase extraction device that can elute in a large volume and can be sucked under negative pressure. Fig. 1 shows a solid phase extraction device with large volume elution and negative pressure suction in this embodiment, which mainly includes: comprises a pipe cap 1 with two-way, a pipe main body 2, a receiving bottle 3 and a base 4; the upper portion of pipe cap 1 is connected with the solid-phase extraction post, the lower part of pipe cap 1 is connected with the upper portion of pipe main part 2, the lower part of pipe main part 2 is connected with receiving flask 3, one side of pipe main part 2 is connected with the vacuum pump, receiving flask 3 is arranged in base 4.
As shown in fig. 2, the structure of the two-way tube cap 1 is shown, and the two-way tube cap 1 is composed of a solid-phase extraction column connector 11, a two-way tube 12, a circular cap body 13, a tube cap cavity 14, a flat circular sealing pad 15 and a circular sealing ring 16; the solid-phase extraction column connecting port 11, the circular cap body 13 and the pipe cap cavity 14 are designed in an integrated manner and cannot be disassembled; the upper part of the pipe cap 1 with the two-way is connected with a port 11 of the solid phase extraction column, and the height of the pipe cap is about 1cm from the two-way upwards. A conical elastic tube 17 is arranged at a distance of 3mm from the two-way valve upwards, the diameter of the upper end of the conical elastic tube 17 is about 4mm, the diameter of the lower end of the conical elastic tube 17 is about 3.5mm, the height of the conical elastic tube is about 7mm, and the conical elastic tube can be connected with an inserted solid phase extraction column and then is tightly connected without air leakage; on the pipe cap 1, the lower part of the solid phase extraction column connecting port 11 is provided with a two-way 12 with a knob, which is convenient for controlling the flow rate. The part of the lower part of the round cap body 13 below the two channels 12, which is combined with the upper opening 21 of the tube main body 2, is provided with a groove, and a flat round sealing gasket 15 is arranged in the groove to enhance the sealing property. The two channels 12 are arranged between the solid phase extraction column connecting port 11 and the circular cap body 13, and the two channels 12 are used for controlling the flow rate of a solvent of the solid phase extraction column; the flat circular sealing gasket 15 is arranged between the circular cap body 13 and the pipe cap cavity 14 to strengthen the sealing function; the pipe cap cavity 14 is provided with two annular grooves, the annular grooves are matched with the circular sealing rings 16, sealing performance is better, and air leakage during vacuum pumping is avoided.
The structure diagram of the tube main body 2 is shown in fig. 3, the tube main body 3 is composed of an upper interface eave 21, an upper cavity 22, a vacuum cavity 23, a frosted interface 24, a collecting pipe 25, a vacuum pumping pipe 26 and a vacuum pumping pipe bulge 27, and the tube main body 2 is designed in an integrated manner and is not detachable. The solid-phase extraction column is connected with the upper end of the pipe cap through a solid-phase extraction column connecting port, and the pipe cap 1 and the pipe main body 2 are sealed through a flat circular sealing gasket 15 and a circular sealing ring 16; the inner diameter of the upper connector eave 21 at the upper part of the pipe main body 2 is the same as the outer diameter of the pipe main body 2, the outer diameter of the upper connector eave 21 is 3-4 mm thicker than the outer diameter of the pipe main body 2, and the width of the flat circular sealing gasket 15 is 2mm, so that the sealing is favorably enhanced; the lower end of the tube main body 2 is a frosted opening and is connected with a receiving bottle, the part of the outer diameter of the lower part of the shell of the tube main body 2, which is connected with the receiving bottle, is frosted with the height of 3cm, the outer diameter is about 2.5cm, and the inner diameter of the tube main body is matched with the inner diameter of 5 common rotary steaming bottles (a round bottom flask, a flat bottom flask, a triangular flask, a chicken heart bottle and a pear-shaped bottle, the inner diameter of the bottle opening is about 2.5 cm), so that the special receiving bottle does not need to be customized, and air leakage does not occur. The utility model provides a vacuum filtration tube 26 is connected to pipe main part, 2 wherein one side, be provided with the protruding 27 of vacuum filtration tube on the vacuum filtration tube 26, the protruding 27 elastic rubber pipe on the vacuum pump of connecting of vacuum filtration tube, but the solid-phase extraction device of bulky elution and negative pressure suction can carry out negative pressure suction work through the vacuum pump, and 2 inner wall body coupling of pipe main part are provided with pressure manifold 25, the upper end of pressure manifold 25 and the inner wall of pipe main part 2 form a body structure, pressure manifold 25 upper end is hourglass hopper-shaped, has the effect of collection and drainage, 2cm are gone out to pressure manifold 25 lower extreme growth pipe main part, pressure manifold 25 lower extreme export is the tapered type, does not hang the liquid drop, pressure manifold 25 lower extreme export extends to below receiving bottle 3 bottleneck to avoid receiving the liquid of extracting in the bottle 3 to suck the vacuum pump backward.
The structure of the base 4 is shown in fig. 4, and the base is composed of a shell 41, a n-shaped protrusion 42 and a bottom support 43; the shell 41 is designed into a bowl shape with a slightly inward-folded bowl mouth, the bowl-shaped shell 41 is internally full of a plurality of bulges 42 in a shape like a Chinese character 'ji', the bulges 42 in a shape like a Chinese character 'ji' have elasticity, when the receiving bottle 3 is plugged into the base, the receiving bottle 3 is firmly surrounded, the diameter of the bowl foot part at the lowermost part is larger than that of the bowl-shaped shell 41, and the bowl-shaped shell is solid, so that the whole device is stable when in use and is suitable for various receiving bottles 3. The base 4 fixes the receiving bottle 3 and plays a role of balance weight, so that the receiving bottle 3 is prevented from overturning.
The solid phase extraction device of bulky elution and negative pressure suction described in this embodiment, take pipe cap 1 of cock to be the plastics material, pipe main part 2 is the glass material, flat circular sealing pad 15 is soft elastic plastics material, circular sealing ring 16 is the elastic rubber material.
The solid phase extraction device with large-volume elution and negative pressure suction has the functions of large-volume elution and negative pressure suction, and can save space. The solid phase extraction device that can bulky elution and negative pressure suction described in this embodiment not only can be operated by a single sample, when needs multi-sample operation, only need trade a plurality of multi-joint vacuum pump suction tubes can be in the range N sample simultaneous operation of pump permission, further realize bulky elution extraction.
Further, the solid phase extraction device with large volume elution and negative pressure suction described in this embodiment, the base 4 may have another scheme, and the specific structure is shown in fig. 5, the base 4 is composed of a top spring 45, a hand-shaped grasping frame 44, and a bottom support 43, the base 41 is designed to be a hand-up grasping type, the hand-shaped grasping frame 44 is an elastic arc-shaped cylinder simulating five fingers of a human, the upper end of each cylinder is provided with a suitable hole 441, the top spring 45 can pass through 5 holes to be connected end to end, when the spring is not stretched, a circle is just formed to fix the mouth of the receiving bottle 3, the 5 arc-shaped cylinders stably grasp the receiving bottle 3 like a handle, the bottom support 43 is a solid disc, and the diameter is about 12 cm.
The specific extraction flow steps of this example are as follows:
(1) the solid phase extraction device capable of large-volume elution and negative pressure suction is inserted into a solid phase extraction column matched with the solid phase extraction device, a reagent is added into the solid phase extraction column for activation, the flow rate is controlled by controlling two ways during the activation, and the liquid level of the reagent in the solid phase extraction column is ensured to be slightly higher than the upper baffle of the solid phase extraction column by 1-2mm when the activation is finished;
(2) quickly pouring the sample extracting solution into a solid-phase extraction column, controlling the flow rate of the two-way valve, and completely opening the two-way valve after liquid in the solid-phase extraction column flows;
(3) the vacuum suction filtration pipe is connected with a vacuum pump, the vacuum pump is started to carry out negative pressure suction, and the vacuum pump is disconnected after the vacuum suction is dried and the vacuum is sucked for a time length required by a standard;
(4) selecting proper eluent for elution;
(5) the receiver bottle was removed for rotary evaporation.
If the filtrate of the sample extracting solution is the target solution, replacing a new receiving bottle after the step (1) is finished to collect the target solution; and (4) if the filtrate of the sample extracting solution is not the target solution and the eluent is the target solution, replacing a new receiving bottle after the step (3) is finished to collect the target solution.
If the two-way valve is properly adjusted in the whole extraction process, the condition that the liquid flow rate is too slow or does not flow still occurs, and the two-way valve can be connected with a vacuum pump again for negative pressure suction for assistance.
The above, only be the embodiment of the utility model discloses a patent preferred, nevertheless the utility model discloses a protection scope is not limited to this, and any technical personnel who is familiar with this technical field are in the utility model discloses a within range, according to the utility model discloses a technical scheme and utility model patent conception of the patent substitute or change with equaling all belong to the protection scope of the utility model patent.
Claims (10)
1. A solid phase extraction device which is suitable for large-volume elution and can be sucked under negative pressure is characterized by comprising a tube cap with two passages, a tube main body, a receiving bottle and a base; the upper portion of pipe cap connects the solid phase extraction post, the lower part of pipe cap is connected with the upper portion of pipe main part, the lower part of pipe main part is connected with the receiving flask, one side of pipe main part is connected with the vacuum pump, the receiving flask is arranged in the base.
2. The solid phase extraction device suitable for large-volume elution and capable of negative pressure suction as claimed in claim 1, wherein the tube cap comprises a solid phase extraction column connection port, a two-way, a circular cap body, a tube cap cavity, a flat circular sealing gasket and a circular sealing ring; the solid-phase extraction column connector, the circular cap body and the tube cap cavity form a tube cap main body of an integrated structure, the two channels are arranged between the solid-phase extraction column connector and the circular cap body, and the flat circular sealing gasket is arranged at the circular cap body.
3. The solid phase extraction device suitable for large-volume elution and capable of negative pressure suction according to claim 2, wherein the solid phase extraction column connection port is arranged at the upper part of the tube cap, and the solid phase extraction column connection port is provided with a conical elastic tube.
4. The solid phase extraction device suitable for large-volume elution and negative pressure suction as claimed in claim 2, wherein a groove is provided at a position where the lower part of the circular cap body is combined with the upper opening of the tube main body, and the flat circular sealing gasket is arranged in the groove.
5. The solid phase extraction device suitable for large-volume elution and capable of realizing negative pressure suction as claimed in claim 2, wherein the tube cap cavity is symmetrically provided with two annular grooves, and the annular grooves are matched and sealed with the circular sealing rings.
6. The solid phase extraction device suitable for large-volume elution and negative pressure suction of claim 1, wherein the tube body comprises an upper interface ledge, an upper cavity, a vacuum cavity, a frosted interface, a collecting pipe, a vacuum suction pipe and a vacuum suction pipe protrusion, and the upper interface ledge, the upper cavity, the vacuum cavity, the frosted interface, the collecting pipe, the vacuum suction pipe and the vacuum suction pipe protrusion form an integrated structure;
the vacuum filtration pipe bulge is arranged at the outlet of the vacuum filtration pipe, and the vacuum filtration pipe bulge is matched and sealed with an elastic rubber pipe on the vacuum pump.
7. The apparatus of claim 6, wherein the upper end of the collecting main is funnel-shaped.
8. The apparatus of claim 7, wherein the upper end of the manifold is integrally formed with the inner wall of the tube body.
9. The apparatus of any one of claims 1 to 8, wherein the base comprises a housing, a plurality of protrusions arranged on an inner wall of the housing, and a bottom support, and the housing is disposed above the bottom support.
10. The solid phase extraction device suitable for large-volume elution and negative pressure suction according to any one of claims 1 to 8, wherein the base comprises a spring, a hand-shaped grasping frame and a bottom support, the hand-shaped grasping frame is composed of a plurality of cylinders, holes are arranged at the upper ends of the cylinders, the hand-shaped grasping frame is arranged above the bottom support, and the spring is connected in a tail-end mode through the holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249790.3U CN217489804U (en) | 2022-05-20 | 2022-05-20 | Solid phase extraction device suitable for large-volume elution and negative pressure suction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249790.3U CN217489804U (en) | 2022-05-20 | 2022-05-20 | Solid phase extraction device suitable for large-volume elution and negative pressure suction |
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| Publication Number | Publication Date |
|---|---|
| CN217489804U true CN217489804U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221249790.3U Active CN217489804U (en) | 2022-05-20 | 2022-05-20 | Solid phase extraction device suitable for large-volume elution and negative pressure suction |
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| CN (1) | CN217489804U (en) |
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- 2022-05-20 CN CN202221249790.3U patent/CN217489804U/en active Active
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